# Ruby 1.8.6. - 100% CPU on OS X **URL:** \ **Category:** Ruby\ **Created:** [September 4, 2008, 1:56am UTC](https://www.ruby-forum.com/t/ruby-1-8-6-100-cpu-on-os-x/147660 "2008-09-04T01:56:22Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![revlob](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/c77e96/32.png) [@revlob](https://www.ruby-forum.com/u/revlob)\ **Post date:** [September 4, 2008, 1:56am UTC](https://www.ruby-forum.com/t/ruby-1-8-6-100-cpu-on-os-x/147660/1 "2008-09-04T01:56:22Z")
Recently Ruby has decided to stomp my CPU. After running for a bit Ruby sometimes spikes to 100% CPU - even if I just have, say, the IRB open in terminal. Any ideas? David ---
**Author:** ![revlob](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/c77e96/32.png) [@revlob](https://www.ruby-forum.com/u/revlob)\ **Post date:** [September 4, 2008, 7:19pm UTC](https://www.ruby-forum.com/t/ruby-1-8-6-100-cpu-on-os-x/147660/2 "2008-09-04T19:19:32Z")
On Wed, Sep 3, 2008 at 5:50 PM, David E. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Are there other things running that you think should be sharing with the cpu? You could always renice the process so it doesn’t hog if it is causing you problems. – “Hey brother Christian with your high and mighty errand, Your actions speak so loud, I can’t hear a word you’re saying.” -Greg Graffin (Bad Religion) ---
**Author:** ![revlob](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/c77e96/32.png) [@revlob](https://www.ruby-forum.com/u/revlob)\ **Post date:** [September 4, 2008, 7:47pm UTC](https://www.ruby-forum.com/t/ruby-1-8-6-100-cpu-on-os-x/147660/3 "2008-09-04T19:47:21Z")
Glen H. wrote: > On Wed, Sep 3, 2008 at 5:50 PM, David E. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > > Are there other things running that you think should be sharing with the > cpu? You could always renice the process so it doesn’t hog if it is > causing > you problems. > > – > “Hey brother Christian with your high and mighty errand, Your actions > speak > so loud, I can’t hear a word you’re saying.” > > -Greg Graffin (Bad Religion) Usually I just kill the process. Not a big problem when it happens once in a while. But now it’s happening several times a day… Can’t find a reference anywhere about ppl having similar problems… ---
**Author:** ![revlob](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/c77e96/32.png) [@revlob](https://www.ruby-forum.com/u/revlob)\ **Post date:** [September 4, 2008, 8:05pm UTC](https://www.ruby-forum.com/t/ruby-1-8-6-100-cpu-on-os-x/147660/4 "2008-09-04T20:05:37Z")
> Can’t find a reference anywhere about ppl having similar problems… I’ve had similar problems before–I think it might be some type of an OS X thing, and is especially aggravated when using multiple ruby threads [if I remember correctly]. You can use dtrace [google for it, or a small hack is [1]] and see if it looks familiar to you at all. I posted something about something once: [http://www.ruby-forum.com/topic/153559#new](http://www.ruby-forum.com/topic/153559#new) TAke care. -=R [1] [http://betterlogic.com/roger/?p=271](http://betterlogic.com/roger/?p=271) ---
**Author:** ![revlob](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/c77e96/32.png) [@revlob](https://www.ruby-forum.com/u/revlob)\ **Post date:** [September 4, 2008, 8:09pm UTC](https://www.ruby-forum.com/t/ruby-1-8-6-100-cpu-on-os-x/147660/5 "2008-09-04T20:09:55Z")
On Thu, Sep 4, 2008 at 11:41 AM, David E. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > "Hey brother Christian with your high and mighty errand, Your actions > > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). Well if the process is actually running (garbage collection maybe) then it would use clock cycles and if there is nothing else needing those cycles I would expect it to use 100%. – “Hey brother Christian with your high and mighty errand, Your actions speak so loud, I can’t hear a word you’re saying.” -Greg Graffin (Bad Religion) ---
**Author:** ![revlob](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/c77e96/32.png) [@revlob](https://www.ruby-forum.com/u/revlob)\ **Post date:** [September 5, 2008, 12:11am UTC](https://www.ruby-forum.com/t/ruby-1-8-6-100-cpu-on-os-x/147660/6 "2008-09-05T00:11:17Z")
-------- Original-Nachricht -------- > Datum: Fri, 5 Sep 2008 06:44:13 +0900 > Von: “Michal S.” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > An: removed\_email\_address@domain.invalid > Betreff: Re: Ruby 1.8.6. - 100% CPU on OS X > with the > > > > > > > cause noticeable load. After all, top uses about one third of all cpu > time on these … > > If it’s on decent hardware then irb consuming noticeable amounts of > CPU time sounds fishy. But then Firefox always eats some cpu time for > me, and there is usually plenty left so I don’t watch it too closely. > > Thanks > > Michal Hi – I don’t know if this applies to your CPU load problem, but I’ve had several strange errors related to Ruby (on Linux Ubuntu). When I reported them on this and other lists, the authors of various gems told me that they had tried their software on a fresh install of Ubuntu and Ruby and their gem, without problems. I then reinstalled Ubuntu on my system, and Ruby, from source, and everything else, and the bug disappeared. I wrote something like that in response to another post, and Ara Howard wrote that he had had issues with Ruby and OS X as well. [http://www.ruby-forum.com/topic/164627#new](http://www.ruby-forum.com/topic/164627#new) Maybe a reinstall from source can help ? Best regards, Axel ---
**Author:** ![revlob](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/c77e96/32.png) [@revlob](https://www.ruby-forum.com/u/revlob)\ **Post date:** [September 5, 2008, 12:24am UTC](https://www.ruby-forum.com/t/ruby-1-8-6-100-cpu-on-os-x/147660/7 "2008-09-05T00:24:46Z")
On Thu, Sep 4, 2008 at 4:04 PM, Axel E. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > > you problems. > > > > > once > > > > > would use clock cycles and if there is nothing else needing those > > > > > CPU time sounds fishy. But then Firefox always eats some cpu time for > > > > > (on Linux Ubuntu). > > Psssst! Schon das coole Video vom GMX MultiMessenger gesehen? > Der Eine für Alle: [GMX Produkte Übersicht: Apps, Browser, MailCheck und Co.](http://www.gmx.net/de/go/messenger03) I wonder if it does the same on the \*BSDs? – “Hey brother Christian with your high and mighty errand, Your actions speak so loud, I can’t hear a word you’re saying.” -Greg Graffin (Bad Religion) ---
**Author:** ![revlob](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/c77e96/32.png) [@revlob](https://www.ruby-forum.com/u/revlob)\ **Post date:** [September 4, 2008, 11:50pm UTC](https://www.ruby-forum.com/t/ruby-1-8-6-100-cpu-on-os-x/147660/8 "2008-09-04T23:50:46Z")
On 04/09/2008, Glen H. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > > > > ## Can’t find a reference anywhere about ppl having similar problems… > > > > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). > > Well if the process is actually running (garbage collection maybe) then it > would use clock cycles and if there is nothing else needing those cycles I > would expect it to use 100%. Well, if it’s on something like a G3 there aren’t many CPU cycles, spare or otherwise. Something like garbage collection could possibly cause noticeable load. After all, top uses about one third of all cpu time on these … If it’s on decent hardware then irb consuming noticeable amounts of CPU time sounds fishy. But then Firefox always eats some cpu time for me, and there is usually plenty left so I don’t watch it too closely. Thanks Michal